The fourth warning. Yahweh now places Himself as it were in a hostile position toward His people who "will not be reformed" (rather, brought unto God: Jeremiah 2:30). He will avenge the outraged cause of His covenant, by the sword, pestilence, famine, and captivity.

And if ye will not be reformed by these things,.... Corrected and amended by these punishments, be prevailed upon to return from their evil ways to the Lord, and walk in his commandments, and keep his judgments, and do them:

but will walk contrary unto me; See Gill on Leviticus 26:21.

The third stage. - But if they would not be chastened by these punishments, and still rose up in hostility to the Lord, He would also engage in a hostile encounter with them, and punish them sevenfold with war, plague, and hunger.

And if ye will not be reformed by me by these things, but will walk contrary unto me;

26:14-39 After God has set the blessing before them which would make them a happy people if they would be obedient, he here sets the curse before them, the evils which would make them miserable, if they were disobedient. Two things would bring ruin. 1. A contempt of God's commandments. They that reject the precept, will come at last to renounce the covenant. 2. A contempt of his corrections. If they will not learn obedience by the things they suffer, God himself would be against them; and this is the root and cause of all their misery. And also, The whole creation would be at war with them. All God's sore judgments would be sent against them. The threatenings here are very particular, they were prophecies, and He that foresaw all their rebellions, knew they would prove so. TEMPORAL judgments are threatened. Those who will not be parted from their sins by the commands of God, shall be parted from them by judgments. Those wedded to their lusts, will have enough of them. SPIRITUAL judgments are threatened, which should seize the mind. They should find no acceptance with God. A guilty conscience would be their continual terror. It is righteous with God to leave those to despair of pardon, who presume to sin; and it is owing to free grace, if we are not left to pine away in the iniquity we were born in, and have lived in.